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fix example code in README #66

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fix example code in README #66

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53 changes: 49 additions & 4 deletions README.md
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Expand Up @@ -38,15 +38,44 @@ A simple example for sending messages to an external Solr service:
xpath.namespace("rdf", "http://www.w3.org/1999/02/22-rdf-syntax-ns#");

from("activemq:topic:fedora")
.choice()
.when(header("org.fcrepo.jms.eventType").isEqualTo("http://fedora.info/definitions/v4/repository#NODE_REMOVED"))
.to("direct:remove")
.otherwise()
.to("direct:update");

from("direct:update")
.to("fcrepo:localhost:8080/rest")
.filter(xpath)
.to("fcrepo:localhost:8080/rest?transform=mytransform")
.to("http4:solr-host:8080/solr/core/update")
.choice()
.when(xpath)
.to("fcrepo:localhost:8080/rest?transform=mytransform")
.to("http4:solr-host:8080/solr/core/update")
.otherwise()
.to("direct:remove");

from("direct:remove")
.transform()
.simple("{\"delete\":{\"id\":\"${header[org.fcrepo.jms.identifier]}\"}}")
.setHeader(Exchange.CONTENT_TYPE, "application/json")
.setHeader(Exchange.HTTP_METHOD, "POST")
.to("http4:solr-host:8080/solr/core/update");

Or, using the Spring DSL:

<route id="solr-indexer">
<route id="solr-router">
<from uri="activemq:topic:fedora"/>
<choice>
<when>
<simple>${header[org.fcrepo.jms.eventType]} == 'http://fedora.info/definitions/v4/repository#NODE_REMOVED'</simple>
<to uri="direct:update"/>
</when>
<otherwise>
<to uri="direct:remove"/>
</otherwise>
</choice>
</route>

<route id="solr-updater">
<to uri="fcrepo:localhost:8080/rest"/>
<filter>
<xpath>/rdf:RDF/rdf:Description/rdf:type[@rdf:resource='http://fedora.info/definitions/v4/indexing#Indexable']</xpath>
Expand All @@ -55,6 +84,22 @@ Or, using the Spring DSL:
</filter>
</route>

<route id="solr-remover">
<transform>
<simple>{"delete":{"id":"${header[org.fcrepo.jms.identifier]}"}}</simple>
</transform>
<setHeader headerName="Content-Type">
<constant>application/json</constant>
</setHeader>
<setHeader headerName="CamelHttpMethod">
<constant>POST</constant>
</setHeader>
<to uri="http4:solr-host:8080/solr/core/update"/>
</route>

**Please Note**: as in this example, if you plan to handle `NODE_REMOVED` events, you should expect any requests
back to fedora (via `fcrepo:`) to respond with a `410 Gone` error, so it is recommended that you route your
messages accordingly.

Setting basic authentication
----------------------------
Expand Down